Benny 你好

I like the new dictionary. Over the weekend I looked up many words and it was very helpful. I even found words that I could not find in other dictionaries; but can you help me with something? For several words there are many choices and I didn’t know which one to pick. What is the best way to say each of the following?

1. I know how much it costs to make these.
2. While returning, we crossed the International Date Line.
3. If you don’t take the money, how can you make a profit?
4. Don’t be a trouble maker.

谢谢